英文關鍵字
aerial
business
company
construction
cover
cylindrical
drone
economy
energy
environment
factory
fuel
gasoline
grass
industrial
industry
kazan
locate
manufacture
metal
oil
petrochemical
petroleum
pipeline
plant
pollution
production
quadrocopter
refinery
reservoir
rotate
station
steam
storage
structure
tank
tatarstan
technology
terminal
territory
tube
view